Table 3 The comparisons of impairment and participation restriction variables among phenotypes
|  | Cluster 1 (3) (N = 79) | Cluster 2 (4) (N = 67) | Cluster 3 (2) (N = 76) | Cluster 4 (1) (N = 28) | p-valuea |
|---|---|---|---|---|---|
Pain scale: Mean ± SD | 3.88 ± 2.68 | 4.06 ± 2.44 | 4.82 ± 2.61 | 5.18 ± 3.20 | 0.012* |
FPROM (degree): Mean ± SD | 131.22 ± 9.92 | 127.69 ± 12.62 | 123.42 ± 16.93 | 118.96 ± 24.58 | 0.001* |
EPROM (degree): Mean ± SD | 3.19 ± 4.92 | 5.48 ± 5.73 | 5.25 ± 5.95 | 5.64 ± 6.18 | 0.032* |
Knee flexor muscle power: Median (Q1, Q3) | 4 (4,5) | 4 (4,5) | 4 (3.25,5) | 4 (4,5) | 0.003 |
Knee extensor muscle power: Median (Q1, Q3) | 5 (4,5) | 5 (4,5) | 4 (4,5) | 5 (4,5) | <  0.001 |
Acquisition of good and service: Median (Q1, Q3) | 1 (0,2) | 2 (1,2) | 2 (2,3.75) | 3 (2,4) | <  0.001 |
Community life: Median (Q1, Q3) | 1 (0,2) | 2 (1,2) | 2 (2,3) | 3 (1,4) | <  0.001 |